公开(公告)号：US20180026659A1

公开(公告)日：2018-01-25

申请号：US15652260

申请日：2017-07-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JIYOUP KIM ,  DONG-MIN SHIN ,  BEOMKYU SHIN ,  JUNJIN KONG ,  HONG RAK SON

IPC: H03M13/11 ,  G11C29/52 ,  G06F11/10

CPC classification number: H03M13/1111 ,  G06F11/1012 ,  G06F11/1068 ,  G11C11/5642 ,  G11C29/52 ,  H03M13/1108 ,  H03M13/116 ,  H03M13/1188 ,  H03M13/3707 ,  H03M13/3723 ,  H03M13/3746 ,  H03M13/6325

Abstract: A low-density parity check (LDPC) decoder may include a variable node processing unit and a check node processing unit. The check node processing unit includes memory elements storing a check node value. The memory elements are interconnected through two or more paths, and each of the paths may include a total or partial cyclic permutation of the memory elements to transmit the check node value.

公开(公告)号：US20220014351A1

公开(公告)日：2022-01-13

申请号：US17347055

申请日：2021-06-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： JU-YOUNG JUNG ,  JIYOUP KIM ,  CHANGKYU SEOL ,  PILSANG YOON ,  JINSOO LIM ,  MYUNGHOON CHOI

IPC: H04L9/00 ,  H04L9/08

Abstract: An electronic device includes a memory storing data from an external source, an application processing unit (APU) transmitting a secret key and public key generation command, an isolated execution environment (IEE) generating a secret key in response to the secret key generation command, generating a public key based on the secret key in response to the public key generation command, and storing the secret key, and a non-volatile memory performing write and read operations depending on a request of the APU. When the data are stored in the memory, the APU transmits a public key request to the IEE and in response the IEE transfers the public key to the APU through a mailbox protocol. The APU generates a ciphertext by performing homomorphic encryption on the data based on an encryption key in the public key, and classifies and stores the public key and the ciphertext in the non-volatile memory.

公开(公告)号：US20240072992A1

公开(公告)日：2024-02-29

申请号：US18312936

申请日：2023-05-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： YOUNG SIK MOON ,  JIYOUP KIM ,  HANBYEUL NA ,  HONG RAK SON ,  SEONGHYEOG CHOI

IPC: H04L9/00 ,  H04L9/08

CPC classification number: H04L9/008 ,  H04L9/0869

Abstract: A homomorphic encryption operator includes: a level configuration unit configured to set an encryption level by selecting a plurality of prime numbers of different values according to a scale factor condition used for multiplication of a homomorphic encryption operation and an increase/decrease condition for increasing or decreasing consecutively selected prime numbers, and a modular multiplication operator configured to perform lightweight modular multiplication using the selected plurality of prime numbers, wherein the level configuration unit includes: a level constructor configured to select prime number sets whose number have selected Hamming weights, respectively, based on the scale factor condition and the increase/decrease condition, and wherein the level configuration unit is further configured to configure the selected prime number sets with the encryption level using a prime number table.

公开(公告)号：US20240048354A1

公开(公告)日：2024-02-08

申请号：US18379384

申请日：2023-10-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： JU-YOUNG JUNG ,  JIYOUP KIM ,  CHANGKYU SEOL ,  PILSANG YOON ,  JINSOO LIM ,  MYUNGHOON CHOI

IPC: H04L9/00 ,  H04L9/08

CPC classification number: H04L9/008 ,  H04L9/0819 ,  H04L9/0894 ,  H04L9/0869

Abstract: An electronic device includes a memory storing data from an external source, an application processing unit (APU) transmitting a secret key and public key generation command, an isolated execution environment (IEE) generating a secret key in response to the secret key generation command, generating a public key based on the secret key in response to the public key generation command, and storing the secret key, and a non-volatile memory performing write and read operations depending on a request of the APU. When the data are stored in the memory, the APU transmits a public key request to the IEE and in response the IEE transfers the public key to the APU through a mailbox protocol. The APU generates a ciphertext by performing homomorphic encryption on the data based on an encryption key in the public key, and classifies and stores the public key and the ciphertext in the non-volatile memory.

公开(公告)号：US20220294554A1

公开(公告)日：2022-09-15

申请号：US17590474

申请日：2022-02-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： CHANGKYU SEOL ,  JIYOUP KIM ,  HYEJEONG SO ,  MYOUNGBO KWAK ,  PILSANG YOON ,  SUCHEOL LEE ,  JINSOO LIM ,  YOUNGDON CHOI

IPC: H04L1/00 ,  G06F1/03

Abstract: Provided is a device and method for encoding and decoding to implement maximum transition avoidance coding with minimum overhead. An exemplary device performs encoding and/or decoding, by using sub-block lookup tables representing correlations between some bit values in a data burst and symbols, a combining lookup table selectively interconnecting the sub-block lookup tables based on remaining bit values of the data burst, and a codeword decoding lookup table designating the sub-block lookup tables corresponding to the symbols of each of received codewords.